/*
 * Copyright 2014 Chris Banes
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package app.philm.in.util;

import android.graphics.Color;

public class ColorUtils {

    public static int darken(final int color, float fraction) {
        return android.support.v4.graphics.ColorUtils.blendARGB(Color.BLACK, color, fraction);
    }

    public static int lighten(final int color, float fraction) {
        return android.support.v4.graphics.ColorUtils.blendARGB(Color.WHITE, color, fraction);
    }

    public static final int changeBrightness(final int color, float fraction) {
        return android.support.v4.graphics.ColorUtils.calculateLuminance(color) >= 128
                ? darken(color, fraction)
                : lighten(color, fraction);
    }

}
